CAS number: 7783-20-2
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Ammonium Sulfate USP NF Grade
CAS No: 7783-20-2.
Ammonium Sulfate contains not less than 99.0 percent and not more than 100.5 percent of (NH4)2SO4.
Identification: A solution (1 in 20) responds to the tests for Ammonium and for Sulfate.
Microbial limits: The total aerobic microbial count does not exceed 1000 cfu per g, and the total combined molds and yeasts count does not exceed 10 cfu per g.
pH: between 5.0 and 6.0, in a solution (1 in 20).
Residue on ignition: Not more than 0.005%, determined on a 20-g sample.
Limit of insoluble matter: 0.005%.
Limit of phosphate: To pass the test.
Limit of chloride: To pass the test: not more than 5 microgm of chloride per g is found.
Limit of nitrate: To pass the test: not more than 0.001% is found.
Limit of iron: To pass the test: not more than 5 microgm of iron per g is found.
Ammonium Sulfate FCC as per US Food Chemical Codex
CAS No: 7783-20-2
Ammonium Sulfate occurs as colorless or white crystals or granules that decompose at temperatures above 280°. One gram is soluble in about 1.5 mL of water. It is insoluble in alcohol. The pH of a 0.1 M solution is between 4.5 and 6.0.
Function: Dough conditioner; yeast nutrient.
Identification: A sample gives positive tests for Ammonium and for Sulfate.
Assay: Not less than 99.0% and not more than 100.5% of (NH4)2SO4.
Lead: Not more than 3 mg/kg.
Residue on Ignition: Not more than 0.25%.
Selenium: Not more than 0.003%.
Ammonium Sulfate ACS Reagent
CAS No: 7783-20-2
Assay: 99.0% (NH4)2SO4
pH of a 5% solution: 5.0-6.0 at 25C
Insoluble matter: 0.005%
Residue after ignition: 0.005%
Chloride (Cl): 5 ppm
Nitrate (NO3): 0.001%
Phosphate (PO4): 5 ppm
Heavy metals (as Pb): 5 ppm
Iron (Fe): 5 ppm.
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